A swept-blade design, WSE generates ... The WindShift WSE Modular Fan is available in diameters of 24 to 41 inches (610 to 1040 mm) and 2.44- to 5.94-inch (62 to 151 mm) pitch widths.

The differences between wind turbine and ceiling fan blades arise from the contrasting design criteria ... and the usual layout of four or five blades is the result of balancing trade-offs ...

While the ceiling fans ... design styles, experts told me that no style makes a significant difference in terms of functionality and air circulation. Neither does the number of blades — more ...